1,1,1,2-Tetrachloroethane
Coachella Water Authority
1,1,1,2-Tetrachloroethane is a synthetic chemical used in metal degreasing and as an intermediate in industrial chemical production.
12
Samples
0
Samples exceeding legal limit (MCL)
0
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | N/A | 0 | 0 | N/A |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | ND | 6 | 0 | ND |
| 2017 | N/A | 0 | 0 | N/A |
| 2018 | N/A | 0 | 0 | N/A |
| 2019 | ND | 6 | 0 | ND |
ppb = parts per billion
State and national drinking water standards and health guidelines
EWG Health Guideline 1 ppb
The EWG Health Guideline of 1 ppb for 1,1,1,2-tetrachloroethane was defined by the Environmental Protection Agency as a one-in-a-million lifetime risk of cancer. Values greater than one-in-a-million cancer risk level can result in increased cancer cases above one in a million people.
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2016-04-26 | 4790-009-0754 | ND |
| 2016-04-26 | 4790-010-0700 | ND |
| 2016-04-26 | 4790-012-0909 | ND |
| 2016-04-27 | 4790-018-0800 | ND |
| 2016-04-27 | 4790-019-0720 | ND |
| 2016-04-27 | 4790-020-0830 | ND |
| 2019-04-22 | 4790-009-1125 | ND |
| 2019-04-22 | 4790-010-1040 | ND |
| 2019-04-22 | 4790-012-1010 | ND |
| 2019-04-22 | 4790-018-1145 | ND |
| 2019-04-22 | 4790-019-1320 | ND |
| 2019-04-22 | 4790-020-1130 | ND |